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66 Current news about the topic light emitting diodes

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Molecules in an egg carton

How water surfaces can be used to produce functional materials

19-Oct-2021

The production of high-quality monolayers – i.e. only one molecule high - is highly relevant for optoelectronic components such as organic light-emitting diodes used today in modern cell phones: Both lifetime and energy efficiency can be increased. Scientists at the Max Planck Institute for ...

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Atom swapping could lead to ultra-bright, flexible next generation LEDs

09-Jun-2021

An international group of researchers has developed a new technique that could be used to make more efficient low-cost light-emitting materials which are flexible and can be printed using ink-jet techniques. The researchers, led by the University of Cambridge and the Technical University of ...

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Black phosphorus-based van der Waals heterostructures for mid-infrared light-emission applications

14-Jul-2020

MIR spectra have been widely used for thermal imaging, molecule characterizations, and communications. MIR light source is the key component of MIR technologies. Among them, MIR light-emitting diodes (LED) show advantages of narrow linewidth, low power consumption and portability. Since the ...

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Microscopic structures could further improve perovskite solar cells

Electrons in the fast lane

06-Jul-2020

Solar cells based on perovskite compounds could soon make electricity generation from sunlight even more efficient and cheaper. The laboratory efficiency of these perovskite solar cells already exceeds that of the well-known silicon solar cells. An international team led by Stefan Weber from the ...

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Printed perovskite LEDs

An innovative technique towards a new standard process of electronics manufacturing

15-Jun-2020

A team of researchers from the Helmholtz-Zentrum Berlin (HZB) and Humboldt-Universität zu Berlin has succeeded for the first time in producing light-emitting diodes (LEDs) from a hybrid perovskite semiconductor material using inkjet printing.This opens the door to broad application of these ...

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X-rays show birth of semiconductor for blue LEDs

Gallium nitride is the second most important semiconductor material after silicon

28-Feb-2020

Using a special pressure furnace, an international team of researchers has analysed the initial stages of the growth of the semiconductor gallium nitride with X-ray light. The observations show for the first time the atomic structure of the interface of the semiconductor material with liquid ...

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LEDs from bacterial production

Sustainable light sources

26-Feb-2020

In the FET Open project ENABLED, TU Graz protein-designer Gustav Oberdorfer is working together with researchers from Spain and Italy on environmentally friendly and inexpensive light-emitting diodes. The basis for this vision is being laid at the Institute of Biochemistry at Graz University of ...

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Platelets instead of spheres make screens more economical

23-Jan-2020

ETH scientists have further developed QLED technology for screens. They have produced light sources that for the first time emit high-​intensity light in only one direction. This reduces scattering losses, which makes the technology extremely energy efficient. QLED screens have been on the market ...

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Extraordinarily thick organic light-emitting diodes solve nagging issues

New approach eases manufacturing constraints and improves viewing angle with little effect on performance

02-Aug-2019

By combining thin organic layers with thick layers of hybrid perovskite, researchers at Kyushu University in Japan have developed micrometer-thick organic light-emitting diodes that could improve the affordability and viewing angles of high-performance displays and televisions in the near ...

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Energy-saving new LED phosphor

25-Apr-2019

The human eye is particularly sensitive to green, but less sensitive to blue and red. Chemists led by Hubert Huppertz at the University of Innsbruck have now developed a new red phosphor whose light is well perceived by the eye. This increases the light yield of white LEDs by around one sixth, ...

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